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Docker info displays information about the docker system, including the number of images and containersCopy the codeDocumentation: docs.docker.com/engine/refe…
Mirror command
Documentation: docs.docker.com/engine/refe…
Docker Images view images on all local hosts
[root@jiangwang /]# Docker images REPOSITORY TAG IMAGE ID CREATED SIZE Hello - World latest D1165f221234 3 days ago 13.3kB
#explainREPOSITORY REPOSITORY source TAG TAG of the IMAGE IMAGE ID ID of the IMAGE CREATED Time when the IMAGE was CREATED SIZE IMAGE SIZE
#optional-a, --all # list all mirrors -q, Docker images -a REPOSITORY TAG IMAGE ID CREATED SIZE hello-world latest D1165f221234 3 days ago 13.3KB [root@jiangwang /]# docker images-q D1165F221234 [root@jiangwang /]# docker images-aq d1165f221234 [root@jiangwang /]#Copy the codeDocker Search searches for images
[root@jiangwang /]# docker search mysql NAME DESCRIPTION STARS OFFICIAL AUTOMATED mysql MySQL is a widely used, The open - source base... 10589 [OK] Mariadb Mariadb Server is a high performing sou... 3963 [OK]
#Optional, filter by mirror-f, [root@jiangwang /]# docker search mysql --filter=STARS=3000 NAME DESCRIPTION STARS OFFICIAL AUTOMATED mysql mysql is a widely used, open-source relation... 10589 [OK] Mariadb Mariadb Server is a high performing sou... 3963 [OK] [root@jiangwang /]# docker search mysql --filter=STARS=5000 NAME DESCRIPTION STARS OFFICIAL AUTOMATED mysql MySQL is a widely used, open-source relation... 10589 [OK] [root@jiangwang /]#Copy the codeDocker pull Downloads the image
docker pull image_name
#Download a mysql image. By default, download the latest image
[root@jiangwang /]# docker pull mysql
#Download the image of the specified version
[root@jiangwang /]# docker pull mysql:5.7
#Take a look at all the images you downloaded[root@jiangwang /]# Docker images REPOSITORY TAG IMAGE ID CREATED SIZE Hello - World latest D1165f221234 3 days ago 13.3kB Mysql 5.7a70d36bc331a 7 weeks ago 449MB mysql latest c8562eaf9d81 7 weeks ago 546MBCopy the codeRemove the mirror
#Delete image docker rmi-f a70d36BC331A based on ID[root@jiangwang /]# docker rmi-f a70d36bc331a Untagged: mysql:5.7 Untagged: mysql@sha256:b3d1eff023f698cd433695c9506171f0d08a8f92a0c8063c1a4d9db9a55808df Deleted: sha256:a70d36bc331a13d297f882d3d63137d24b804f29fa67158c40ad91d5050c39c5 Deleted: sha256:50c77bf7bcddd1f1d97789d80ac2404eec22c860c104e858620d2a2e321f0ef7 Deleted: sha256:14244329b83dfc8982398ee4104a548385652d2bffb957798ff86a419013efd6 Deleted: sha256:6d990477f90af28473eb601a9bca22253f6381e053c5a8edda0a4f027e124a3c Deleted: sha256:ee0449796df204071589162fc16f8d65586312a40c68d1ba156c93c56f5e5ce8 [root@jiangwang /]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE hello-world latest d1165f221234 3 days ago 13.3kB mysql latest c8562eaf9d81 7 weeks ago 546MB [root@jiangwang /]#
## Delete all mirrors[root@jiangwang /]# docker rmi -f $(docker images -aq) [root@jiangwang /]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE [root@jiangwang /]#
#Deleting Multiple MirrorsDocker rmi -f Image ID Image ID Image IDCopy the codeContainer command
With the image to create containers, Linux, download a centos image
[root@jiangwang /]# docker pull centos
Using default tag: latest
latest: Pulling from library/centos
7a0437f04f83: Pull complete
Digest: sha256:5528e8b1b1719d34604c87e11dcd1c0a20bedf46e83b5632cdeac91b8c04efc1
Status: Downloaded newer image for centos:latest
docker.io/library/centos:latest
[root@jiangwang /]#
Copy the codeCreate a new container and start
Docker run [Optional] image
#Parameters that--name=" name "Container name tomcat01 tomcat02 -p Specified container port -p 8080:8080 -p IP: host port: container port -p Host port: Container port (common) -p Container port Container port -p Randomly specified port
#Test, start, and enter the container
[root@jiangwang /]# docker run -it centos /bin/bash
[root@685c34c813d5 /]# ls # 查看容器内的centos
bin etc lib lost+found mnt proc run srv tmp var
dev home lib64 media opt root sbin sys usr
#Return the host from the container[root@685c34c813d5 /]# exit exit [root@jiangwang /]# ls bin dev home lib lost+found mnt patch root sbin sys usr www boot etc install.sh lib64 media opt proc run srv tmp varCopy the codeView which containers are currently running
#Docker PS displays containers that are working properly-a # Display current running containers + containers that have been run in history -n=? [root@jiangwang /]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES [root@jiangwang /]# docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 685c34c813d5 centos "/bin/bash" 3 minutes ago Exited (0) About a minute ago pensive_shaw db8909cfa9cc d1165f221234 "/hello" 4 hours ago Exited (0) 4 hours ago adoring_shockley [root@jiangwang /]# docker ps -n=1 CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 685c34c813d5 centos "/bin/bash" 7 minutes ago Exited (0) 5 minutes ago pensive_shaw [root@jiangwang /]# docker ps -aq 685c34c813d5 db8909cfa9cc [root@jiangwang /]#Copy the codeOut of the container
[root@jiangwang /]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES [root@jiangwang /]# docker run -it centos /bin/bash [root@589fa10f7998 /]# [root@jiangwang /]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 589fa10f7998 centos "/bin/bash" 31 seconds ago Up 29 seconds magical_noether [root@jiangwang /]#Copy the codeStart, stop, and Restart container commands
Docker start container_name/container_id # Start container_id docker stop container_name/container_id # Stop container_name/container_id # Stop container_name/container_id # Stop container_name/container_id # Container_name /container_id # Restart container docker kill container_name/container_id # Forcibly stop the current containerCopy the codeAfter starting a container in the background, you can use the attach command to access the container
docker attach container_name/container_id
Copy the codeThe command to delete the container
Docker rm container_name/container_id # Cannot delete running containersCopy the codeDelete all stopped containers
docker rm -f $(docker ps -a -q)
Copy the codeView the current system Docker information
docker info
Copy the codeDownload an image from the Docker Hub
docker pull centos:latest
Copy the codeLook for nginx images on ocker Hub
docker search nginx
Copy the codeOther commonly used commands
Background startup container
#Docker run -d specifies the image name
[root@jiangwang /]# docker run -d centos
dd83c9017b8b6cb2ed07d1943e0db8421b7ad0864ab291e7d470a6af76a8a6a9
[root@jiangwang /]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@jiangwang /]#
#Docker ps found centos stopped
#Common pit: Docker container using background running, there must be a foreground process, Docker found no application, automatically stop
#Nginx, once the container is started, it is found that the attack does not provide service, so it stops immediately
Copy the codeSee the log
Docker logs -f -t --tail containerCopy the codeView the process information in the container ps
#Docker top Container ID
[root@jiangwang /]# docker top fbff5b668c3a
UID PID PPID C STIME TTY TIME CMD
root 4345 4324 0 16:59 pts/0 00:00:00 /bin/bash
Copy the codeView metadata in the mirror
#Docker inspect Container ID
#test[root@jiangwang /]# docker inspect container IDCopy the codeEnter the currently running container
#Command dockerexec-it Container ID /bin/bash
#test[root@jiangwang /]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES fbff5b668c3a centos "/bin/bash" 16 minutes ago Up 16 minutes blissful [root@jiangwang /]# docker exec -it fbff5b668c3a /bin/bash [root@fbff5b668c3a /]# ls bin etc lib lost+found mnt proc run srv tmp var dev home lib64 media opt root sbin sys usr [root@fbff5b668c3a /]# ps -ef UID PID PPID C STIME TTY TIME CMD root 1 0 0 08:59 pts/0 00:00:00 /bin/bash root 16 0 0 09:16 pts/1 00:00:00 /bin/bash root 32 16 0 09:17 pts/1 00:00:00 ps -ef
#Docker Attach container ID
[root@jiangwang /]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
fbff5b668c3a centos "/bin/bash" 20 minutes ago Up 20 minutes blissful_tu
[root@jiangwang /]# docker attach fbff5b668c3a
[root@fbff5b668c3a /]# ls
bin etc lib lost+found mnt proc run srv tmp var
dev home lib64 media opt root sbin sys usr
[root@fbff5b668c3a /]#
Copy the codeCopy files from a container to a host
#Docker cp Container ID: indicates the host path of the destination in a container
#Into the container[root@jiangwang /]# docker attach fbff5b668c3a [root@fbff5b668c3a /]# ls bin etc lib lost+found mnt proc run srv tmp var dev home lib64 media opt root sbin sys usr [root@fbff5b668c3a /]# cd home/ #Create a new test.java file under the home path in the container
[root@fbff5b668c3a home]# touch test.java
[root@fbff5b668c3a home]# ls
test.java
[root@fbff5b668c3a home]# exit
exit
[root@jiangwang /]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
#Copy the test. Java file in the container to the Linux host
[root@jiangwang /]# docker cp fbff5b668c3a:/home/test.java /home
[root@jiangwang /]# cd home/
#The file is successfully copied to the /home directory
[root@jiangwang home]# ls
f2 f3 jiangwang test.java www
Copy the code